Prediction method for algal blooms of filamentous algae attached to aquatic plants

Abstract

The invention relates to a method for predicting algal blooms attached with filamentous algae on aquatic plants, which comprises the following steps of: collecting water samples and aquatic plant samples by arranging monitoring points in a whole lake, identifying and identifying the aquatic plants and the attached filamentous algae samples, and determining the types of the main matrix aquatic plants and the types of the algal blooms; through algae photosynthesis and activity analysis, algae biomass analysis and environment variable analysis, main driving factors and key thresholds of filamentous attached water bloom algae biomass temporal and spatial change are determined, a classification regression function of filamentous attached water bloom algae biomass based on aquatic plant type differentiation is formed, and the classification regression function is combined with geostatistical analysis of environment characteristics to determine the classification regression function of filamentous attached water bloom algae biomass. And predicting the early occurrence time and the distribution range of the filamentous algal blooms attached to the aquatic plants. The method disclosed by the invention has an important decision support effect on comprehensive environment management of the water body with the filamentous algal bloom, and the pertinence and scientificity of technical and engineering measures in lake treatment are improved.

Description

technical field [0001] The invention relates to a method for predicting filamentous algae blooms attached to aquatic plants, which can realize the prediction of the early occurrence time of the water blooms and the spatial distribution range in different periods. Background technique [0002] Due to the problems of lake eutrophication and climate change, algal blooms have appeared in many lakes and reservoirs in China. The dominant algae of these algal blooms have obvious differences, including Microcystis, A. There are also water blooms in the planktonic state, such as algae, plastophytes, clastidioides, and water cotton, which are in the attached state. These attached bloom algae often co-exist with aquatic plants, forming "yellow moss", which blocks underwater light, affects the growth and reproduction of other organisms in the water body, causes water quality deterioration, and affects the ecological health of the water body environment and water supply security. [000...

AI Technical Summary

Problems solved by technology

Although the work carried out at home and abroad has reported the phenomenon of algal blooms found in a series of water bodies, the prediction work for algal blooms has not been reported yet.

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